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LT1158I Datasheet(PDF) 3 Page - Linear Technology |
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LT1158I Datasheet(HTML) 3 Page - Linear Technology |
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3 / 20 page  LT1158 3 TEMPERATURE (°C) –50 8 10 14 25 75 LT1158 G02 6 4 –25 0 50 100 125 2 0 12 I2 + I10 + I16 V+ = 12V INPUT HIGH INPUT LOW ENABLE LOW SUPPLY VOLTAGE (V) 0 8 10 12 30 LT1158 G01 6 4 10 20 40 2 0 14 I2 + I10 + I16 ENABLE LOW 515 25 35 INPUT LOW INPUT HIGH V13 = 0V V13 = V+ INPUT FREQUENCY (kHz) 1 0 5 10 15 20 30 10 100 LT1158 G03 25 50% DUTY CYCLE CGATE = 3000pF V+ = 24V V+ = 6V V+ = 12V DC Supply Current DC Supply Current Dynamic Supply Current (V +) TYPICAL PERFORMANCE CHARACTERISTICS Test Circuit, TA = 25°C, V + = V16 = 12V, V11 = V12 = V13 = 0V, Pins 1 and 4 ELECTRICAL CHARACTERISTICS The q denotes specifications that apply over the full operating temperature range. Note 1: TJ is calculated from the ambient temperature TA and power dissipation PD according to the following formulas: LT1158IN, LT1158CN: TJ = TA + (PD × 70°C/W) LT1158IS, LT1158CS: TJ = TA + (PD × 110°C/W) Note 2: Dynamic supply current is higher due to the gate charge being delivered at the switching frequency. See typical performance characteristics and applications information. Note 3: Gate rise times are measured from 2V to 10V, delay times are measured from the input transition to when the gate voltage has decreased to 10V, and fall times are measured from 10V to 2V. LT1158I LT1158C SYMBOL PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS V14 – V13 Top Turn-Off Threshold V + = V16 = 5V, V6 = 0.8V 1 1.75 2.5 1 1.75 2.5 V V8 Bottom Turn-Off Threshold V + = V16 = 5V, V6 = 2V 1 1.5 2 1 1.5 2 V I5 Fault Output Leakage V + = 30V, V16 = 15V, V6 = 2V q 0.1 1 0.1 1 µA V5 Fault Output Saturation V + = 30V, V16 = 15V, V6 = 2V, I5 = 10mA 0.5 1 0.5 1 V V12 – V11 Fault Conduction Threshold V + = 30V, V16 = 15V, V6 = 2V, I5 = 100µA 90 110 130 85 110 135 mV V12 – V11 Current Limit Threshold V + = 30V, V16 = 15V, V6 = 2V, Closed Loop 130 150 170 120 150 180 mV q 120 180 120 180 mV V12 – V11 Current Limit Inhibit V + = V12 = 12V, V6 = 2V, Decrease V11 1.1 1.25 1.4 1.1 1.25 1.4 V VDS Threshold until V15 goes low tR Top Gate Rise Time Pin 6 (+) Transition, Meas. V15 – V13 (Note 3) q 130 250 130 250 ns tD Top Gate Turn-Off Delay Pin 6 (–) Transition, Meas. V15 – V13 (Note 3) q 350 550 350 550 ns tF Top Gate Fall Time Pin 6 (–) Transition, Meas. V15 – V13 (Note 3) q 120 250 120 250 ns tR Bottom Gate Rise Time Pin 6 (–) Transition, Meas. V9 (Note 3) q 130 250 130 250 ns tD Bottom Gate Turn-Off Delay Pin 6 (+) Transition, Meas. V9 (Note 3) q 200 400 200 400 ns tF Bottom Gate Fall Time Pin 6 (+) Transition, Meas. V9 (Note 3) q 100 200 100 200 ns open, Gate Feedback pins connected to Gate Drive pins unless otherwise specified. |
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